Blind,roller-blind, and the like.



J. A. HEDBERG.

BLIND, ROLLER BLIND, AND THE LIKE.

APPLIUATIOH nun r23. 27, 1912.

Patented Sept. 16, 1913.

2 SHEETS-SHEET 1.

N I TN E55 ES;

J. A. HEDBERG. BLIND,'ROLLEB BLIND, AND THE LIKE.

APPLICATION FILED PER. 27, 1912.

2 slums-sum 2.

Patented Sept. 16, 1913.

F UX

I i111 i JAKOIB AUGUST HEDBERG, 0F GOTTENBORG, SWEDEN.

BLIND, ROLLEB BLIND, AND THE LIKE.

Specification of Letters Patent.

Patented Sept. 16, 1913.

Application filed February 27, 1912. Serial No. 680,186.

To all whom it may concern;

Be it known that I, J AKOB AUGUST Hem BERG, a subject of the King ofSweden, and resident of Odinplatsen 3, Gottenborg, in the Kingdom ofSweden, have invented certain new and useful Improvements in Blinds,Roller-Blinds, and the Like, of which the following is a specification,referones being had therein to the accompanying drawings.

This invention relates to im rovements in blinds, roller-blinds and theli e.

One characteristic feature of the said invention consists in anautomatic locking device for the cord by means of which the blind israised and lowered. The said looking device consists of two pivotallyconnected jaws, forming a pair of gri pers. One of the said jaws isextended bac ward and upward forming a lever, which is acted upon y thecord, bearing against the same, so that the jaws are forced one againstthe other and lock the cord. The rear end of the other jaw is pivoted toand, if necessary ilidably connected with the top lath of the lind.

A further characteristic feature of the invention consists of a selfreleasing adjusting device for the ribs of the blind, which comprises atoothed segment, located above the top lath of the blind and in positionto engage a pin or the like, projecting from the same. To the saidsegment an arm is pivoted, which, by holding the segment in a raisedposition, permits the lath to return to its initial position. In selfreleasing adjusting devices of the said class hitherto used the arm,pivoted to the toothed segment, hangs freely down and, as the segmentoisraised, the arm is placed with its lower free end upon a stationarysupport. This arrangement involves the disadvantage of the arm, forinstance at a violent pull in the adjusting cord, being swun beyond thesaid support instead of being p aced on the samel For that reason theadjusting mechanism gets out of order and can be brought into the rightposition only with diificulty. According to this invention the said armis formed to a hook and thc'stationary suv rt has such a position withrelation to t e 00k, that the hook, during the movement of the toothedso out, slides on the sup ort and at the on of the said movement allsdown and engages the support. The said is a front view of a blindarranged in accordance with this invention and provided with two cordsfor the raising and lowermg of the blind. Fig. 5 is an end view of thelocking device of the blind shown in Fig. 4. Figs. 6, 7 and 8 are detailviews of the self releasing adjusting device of the blind. Fig. 9 is alongitudinal sectional view of the gripper jaws.

1, Figs. 1. and 2, is the window-frame, and 2, 2 are the end bearings ofthe blind, in which the roller 3-and the top lath are journaled. Thesaid bearings 2, 2 are fixed to the window-frame in the manner describedbelow.

5 is the operating cord of the blind wound around the roller 3, and 6are the strings, wound around the roller 3,in opposite direction to thecord and assing through the ribs 7 of the blind to t e bottom rib in theordinary manner.

8, 8 are the ordinary strings fixed to the edges of the ribs 7 and thetop lath 4. The locking device for the crating cord 5 consists of twojaws 9 an 10, connected by a givot 11 and forming a pair of grippers.

oth the said jaws or at least the jaw 10 is groove shaped, forming aguide for the cord 5, passing etween the jaws. The jaw 9 of the grippersis formed to an eye 12, slid on a loop 13 fixed to the lath 4, so thatthe grippers can swing around the said loop and be moved longitudinallyof the same. The jaw 10 is extended backward and forms a lever, which isacted upon by the cord passing through the grippers. In an arm 14,rojecting from the jaw 9 a cord 15 is fixed, by means of which thegrippers can be swung around the loop 13 for the disengaging of theoperating cord 5.

- When the blind is raised, fully or partially, the part of the cord 5located between the grippers and theroller 3 is strained andconsequently the grippers occupy the poshtion shown in Fig. 2, in whichthe cord 5, acting upon the top part of the aw- 10, forces the said jawagainst the jaw 9, so that the jaws 9, 10 engage the cord and preventthe same from sliding. If one. now pulls the cord 15, the grippers areswung around the loop 13 and the pressure of the cord 5 on the top armof the jaw 10 is reduccd, so that the cord 5 can slide between the jaws9, 10 and the blind can be raised or lowered. After the raising orlowering ot' the blind it is only necessary to leavehold of the cord 5.The grippers will then occupy the position shown in Fig. 2 and lock thecord.

In the locking device shown in Figs. 4 and 5 the grippers 9, 10 ispivoted to the lower side of the top lath and swingable longitudinallyof the same. The jaw 9 has a pin 16, extending through a slot 17provided in the jaw 10. The said'pin is adapted to separate the twooperating cords 5, 5 passing through loops 18, 18 and the gr ppers. Whenpulling the cords 5, 5 therippers 9, 10 are swung backward and re easethe said cords. After the raising or lowering of the blind, one pullsthe cord 15, fixed in the arm 14 of the jaw 9, and thus forces thegrippers forward, so that it again engages the cords 5, 5 and locks thesame.

For fixing the end bearings 2, 2 of the blind to the window-frame thefollowing means are used: 19 is a preferably fork shaped mountingfixed'to the window frame and provided at its lower end with atransverse pin 20, which is fixed in the shanks of the mounting. A baror bolt 21, provided with a longitudinal slot 22, which extendssubstantially from the center of the bolt to its one end is slidablymounted on the said pin 20, embracing the pin with the said slot. Theinner end 22 of the slot 22 is enlarged or extended toward the one sideof the bar for the purpose stated below. The horizontal, top part 23 ofthe end bearing 2 is provided with an opening 24, through which the bar21 and the mounting 19 can be threaded. For the fixing of the endbearing 2 to the window frame the bar 21 is brought into the positionshown in Fig. 3. The part 23 of the end bearing 2 is then threaded onthe bar 21 with its opening 24 and slid upward on the bar and themounting to the position shown in Fig. 3 and the bar 21 swung upwardinto the position indicated by dotted lines in Fig. 2. The bar 21 isfinally pushed inward to the position shown by full lines in-Fig. 2, sothat the part 22 of the slot 22 engages the pin 20. In the said positionthe bar 21 supports the bearing, The bearing 2 and other parts of theblind keep the part 22 of the slot 22 firmly in engagement with the pin20, so that the bar is prevented in a reliable manner from beingdisplaced accidentally. For the removing of the bearing 2 one proceedsin reversed order, a e. the bar 21 is pushed into the position, shown bydotted lines in- Fig. 2,

downward on the same, acted upon by the I and thenswung downward to theposition, shown in Fig. 3 in which the bearing 2 slides weight of theblind. The bar 21 is provided,

if necessary, with a hole 25 for the engaging of a suitable tool fortheshifting of the bar -21. N

The self releasing adjusting device shown in Figs. 6, 7 and 8 consistsof the toothed segment 26, pivoted at 27 to the end bearing 2. In thetop lath 4 of the blind a projection or pin 28 is provided, which, asthe said top lath 4 is rotated, engages the teeth 26 of the segment 26in the usual manner and holds the blind in adjusted position. To thesegment 26 is at 29 pivoted an arm 30, which in the position shown inFig. 6 bears upon the top side of a pin 31, fixed in the end bearing 2.The free end of the arm 30 is formed to a hook. If the top lath 4 hasbeen rotated to an oblique position with the pin 28 engaging one of theteeth 26 of the segment 26 and the top lath is to be returned to itsoriginal position shown in Fig. 6, the lath is so rotated, that the pin28 engages the nose 32 of the segment 26 and swings the segment 26upward to the position shown in Fig. 7. During its movement to the saidpositlon the segment 26 moves the arm 30 toward the left, so that thehook shaped arm 30 falls down and engages the pin 31, Fig. 7. The arm 30thus keeps the segment 26 in a reliable manner in its raised positionwith the teeth located out of the path of the pin 28, o that the lath 4can return to its original position. During the last part of the returnmotion of the top lath 4 the pin 28 strikes the lower edge of the arm 30and raises the arm out of engagement with the pin 31 andmoves the sameinto the position shown in Fig. 6, the parts being thus returned totheir initial positions.

Having now described my invention, what I claimas new and desire tosecure by Letters Patent is:

1. In a locking device for blinds, rollerblinds and the like thecombination of two pivotally connected jaws, between which the operatingcord or cords pass, means pivotally connecting one of the saidjaws withthe top lath, and an extension of the other jaw, forming a lever armacted upon by the said cord, substantially as described and shown inthe. drawings.

2. In a locking device for blinds, rollerblinds and the like thecombination of two pivotally connected jaws, between which the operatingcords pass, means pivotally connecting one of the said jaws with the toplath, an extension of the other jaw, forming and a pin fixed in one ofthe jaws and extending through a slot in the other jaw, which pinseparates the cords, substantially as described and shown in thedrawings.

3. In a locking device for blinds, rollerblinds and the like thecombination of two pivotally connected jaws, between which the operatingcord or cords pass, means pivotally connecting one of the said jaws withthe top lath, an extension of the other jaw, forming a lever arm actedupon by the said cord, and means for connecting with the locking devicea cord, by means of which the locking device can be swung intoinoperative or operative position, substantially as described and shownin the drawings.

4. In blinds of the class stated above the combination of a toothedsegment, pivoted to oneof the end bearings of the blind and cotiperatingwith the top-lath, a hook shaped arm which is pivoted to the saidtoothed segment and is normally carried by a stationary support, intoengagement with which it is moved, as the toothed segment is raisedduring the releasing operation, and thus keeps the segment in raisedposition, and a surface on the said arm acted upon by the top lath atthe end of the releasing operation for bringing the hook-shaped arm outof engagement with the said stationary support, substantially asdescribed and shown in the drawings.

In witness whereof, I have hereunto signed my name in the presence oftwo subscribing witnesses.

J AKOB AUGUST HEDBERG.

Witnesses:

ARTHUR PETTERSON, CHARLES V. BLooH.

